Hold on!

I suspect you will be fine. Someone with a Yammy and 80s will post and give you the real deal!

The 2600 is new and the newer versions of the Yamaha are better than previous models.

Your main concern will be too much heat build up if you listen at insanely loud levels. The 80s are very efficient and an easy 4 ohm load.

I forgot to welcome you to the forum earlier. Welcome! I think you will find many here with the experience to help you.